Vektek Inch Hydraulic Clamping Catalog

Accessory Valves

Pilot Operated Check Valve

4X .28

K

INLET PORT G

COUNTERBORE TYPE 70-3317-70 & 70-3317-72

L M

A

D E

C

F

.28

L M

2.47

MANUAL OPERATED CHECK VALVE RELEASE

2.75

3.62

MANUAL OPERATED CHECK VALVE PN:70-3311-14 & 70-3317-72

OUTLET PORT G

B

J

.07 MANUAL RELEASE PLUNGER STROKE

.868

2.75

2.30

3.72

THESE MANUAL OPERATED CHECK VALVE TAKE 3.5 LBS OF FORCE PER 100 PSI TO RELEASE

1.39

.49

Pilot Operated Check Valve n Cartridge and Manifold Mount versions. n Sealed pilot piston eliminates cross circuit leakage. n 5:1 Ratio of Pilot to Check pressure for release. n Flows up to 1.5 gal/min at 5,000 psi maximum pressure.

SAE 2 PILOT PORT

OPTIONAL MANIFOLD PILOT PORT H

MANIFOLD OUTLET PORT H

MANIFOLD INLET PORT H

ILS703305 REV C

Assembly Dimensions Model No.

Mounting Style A B C D E F G H J

K L M

70-3311-13

Manifold/SAE

2.00 1.63 1.00 1.66 1.56 0.34 SAE 6 SAE 2 Plug 1.06 1.13 0.28 0.44

L-4

70-3311-14 Manifold/SAE, Manual 70-3317-70 Manifold Only 70-3317-72 Manifold Only, Manual

1.75 1.50 0.88 1.53 1.44 0.22 N/A N/A 0.94 N/A 0.28 0.44

M-4

For proper sealing, mating surface must be flat to 0.003 in. with a maximum 63 µ in. R a surface finish.

MOUNTING DIMENSION FOR PILOT CHECK VALVE P/N 70-3311-13 AND 70-3317-70

2.186

1.981

1.075

0.169

.130 .090 3 PLACES FOR MANIFOLD PORTING

0.657

0.562

1.313

4X 1/4" MOUNTING HOLES THREAD .380 MINIMUM THREAD DEPTH

PILOT PORT

INLET PORT

OUTLET PORT

ILS703307 REV D

© Vektek, July 2024

800-992-0236

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